巧算：999×222+333×334巧算：999×222+333×334 需脱式计算

巧算：999×222×333×334 巧算：999×222+333×334巧算：999×222+333×334 需脱式计算 999×222+333×334巧算,提示,把999写成333×334 999*222+333*334能简算吗 999*222+333*334= 333×334+999×222快速 333×334+999×222 用简便运算. 333*334+999*222的简便算法 222×999+333×334的简便计算? 用简便计算.999*222+333*334 简便计算：222×999+333×334 333*334+999*222怎么算简单 222*999+333*334 怎么简算? 999+222+333×334的简算 333*334+222*999=几jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj 999×222+333×334= （简便运算） 999乘222加333乘334的简便运算 999乘222加333乘334怎么简算?